Seiko Cal. 6639 - 400

This Kinetic model from 1972 features a 40mm Gold-Plated case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-c09309fb1cf5]

Also known as: Silverwave, Flighty

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1972

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